An item of any peripheral shape usually having one flat or spherical surface and a centrally located hole. It is designed for applications involving moving (kinetic) loads. Except for items fabricated from bearing quality synthetic (plastic) or composed of multilayer material, one bearing surface must either have a specific surface finish designation of 32 microinch (0.8 micrometre) or less, arithmetical average (aa) (arithmetic mean deviation) or one of the following conditions: be lapped or ground; have visible or detectable means of lubrication; grooves, indentations; or self-lubrication. The thickness must not exceed 25 percent of the outside diameter of the shortest distance between peripheral flats (when thickness and/or outside diameter is designated as a tolerance dimension, the maximum dimension will be used to determine compliance). Excludes straight, tubular (without flange) items having a bearing surface(s) parallel to the axis of the bore only. See also washer, flat and spacer, sleeve.
Classification: Thrust ball bearings
NSN 5920-00-858-1118
NSN 5990-00-583-9577
NSN 6685-00-538-8656
NSN 5905-01-292-5024
NSN 5925-00-140-6367
NSN 6685-01-493-1809
NSN 6320-00-809-5744
NSN 5920-00-681-6464
NSN 6650-01-036-4344
NSN 5895-00-036-7257
NSN 5990-00-174-6695
NSN 6685-00-877-3117